to be interested
感 · 13 strokes
Phonosemantic compound. 心 represents the meaning and 咸 represents the sound.
兴 · 6 strokes
Depicts four hands (舁) working together (同) to raise something. The simplified character 兴 was adapted from the cursive form of the traditional character 興.
趣 · 15 strokes
Phonosemantic compound. 走 represents the meaning and 取 represents the sound.